Cold flow improvers for vegetable or animal fuel oils

Details Cold flow improvers for vegetable or animal fuel oils Cold flow improvers for vegetable or animal fuel oils

C - Chemistry, Metallurgy

10

L

C10L 1/18 (2006.01) C10L 1/188 (2006.01) C10L 1/19 (2006.01) C10L 1/192 (2006.01)

Patent

CA 2588539

The present invention relates to a fuel oil additive comprising A) a copolymer of ethylene and from 13 to 17 mol% of at least one acrylic ester or vinyl ester having a C1-C18-alkyl radical and a melt viscosity V140 of not more than 80 mPas, and B) a comb polymer comprising structural units formed from B1) at least one olefin as monomer 1, which bears at least one C8-C18-alkyl radical on the olefinic double bond, and B2) at least one ethylenically unsaturated dicarboxylic acid as monomer 2, which bears at least one C8-C16-alkyl radical bonded via an amide and/or imide group, in which the parameter Q Image in which w1 is the molar proportion of the individual chain lengths ni in the alkyl radicals of monomer 1, w2 is the molar proportion of the individual chain lengths n2 in the alkyl radicals of the amide and/or imide groups of monomer 2, n1 are the individual chain lengths in the alkyl radicals of monomer 1, n2 are the individual chain lengths in the alkyl radicals of the amide and/or imide groups of monomer 2, i is the serial variable for the chain lengths in the alkyl radicals of monomer 1, and j is the serial variable for the chain lengths in the alkyl radicals of the amide and/or imide groups of monomer 2 assumes values of from 23 to 27.

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